/* eslint-disable */
/* Blob.js
 * A Blob implementation.
 * 2014-05-27
 *
 * By Eli Grey, http://eligrey.com
 * By Devin Samarin, https://github.com/eboyjr
 * License: X11/MIT
 *   See LICENSE.md
 */

/*global self, unescape */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
 plusplus: true */

/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */

(function (view) {
	"use strict";

	view.URL = view.URL || view.webkitURL;

	if (view.Blob && view.URL) {
			try {
					new Blob;
					return;
			} catch (e) {}
	}

	// Internally we use a BlobBuilder implementation to base Blob off of
	// in order to support older browsers that only have BlobBuilder
	var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function(view) {
					var
							get_class = function(object) {
									return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];
							}
							, FakeBlobBuilder = function BlobBuilder() {
									this.data = [];
							}
							, FakeBlob = function Blob(data, type, encoding) {
									this.data = data;
									this.size = data.length;
									this.type = type;
									this.encoding = encoding;
							}
							, FBB_proto = FakeBlobBuilder.prototype
							, FB_proto = FakeBlob.prototype
							, FileReaderSync = view.FileReaderSync
							, FileException = function(type) {
									this.code = this[this.name = type];
							}
							, file_ex_codes = (
									"NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "
									+ "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR"
							).split(" ")
							, file_ex_code = file_ex_codes.length
							, real_URL = view.URL || view.webkitURL || view
							, real_create_object_URL = real_URL.createObjectURL
							, real_revoke_object_URL = real_URL.revokeObjectURL
							, URL = real_URL
							, btoa = view.btoa
							, atob = view.atob

							, ArrayBuffer = view.ArrayBuffer
							, Uint8Array = view.Uint8Array
							;
					FakeBlob.fake = FB_proto.fake = true;
					while (file_ex_code--) {
							FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
					}
					if (!real_URL.createObjectURL) {
							URL = view.URL = {};
					}
					URL.createObjectURL = function(blob) {
							var
									type = blob.type
									, data_URI_header
									;
							if (type === null) {
									type = "application/octet-stream";
							}
							if (blob instanceof FakeBlob) {
									data_URI_header = "data:" + type;
									if (blob.encoding === "base64") {
											return data_URI_header + ";base64," + blob.data;
									} else if (blob.encoding === "URI") {
											return data_URI_header + "," + decodeURIComponent(blob.data);
									} if (btoa) {
											return data_URI_header + ";base64," + btoa(blob.data);
									} else {
											return data_URI_header + "," + encodeURIComponent(blob.data);
									}
							} else if (real_create_object_URL) {
									return real_create_object_URL.call(real_URL, blob);
							}
					};
					URL.revokeObjectURL = function(object_URL) {
							if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {
									real_revoke_object_URL.call(real_URL, object_URL);
							}
					};
					FBB_proto.append = function(data/*, endings*/) {
							var bb = this.data;
							// decode data to a binary string
							if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {
									var
											str = ""
											, buf = new Uint8Array(data)
											, i = 0
											, buf_len = buf.length
											;
									for (; i < buf_len; i++) {
											str += String.fromCharCode(buf[i]);
									}
									bb.push(str);
							} else if (get_class(data) === "Blob" || get_class(data) === "File") {
									if (FileReaderSync) {
											var fr = new FileReaderSync;
											bb.push(fr.readAsBinaryString(data));
									} else {
											// async FileReader won't work as BlobBuilder is sync
											throw new FileException("NOT_READABLE_ERR");
									}
							} else if (data instanceof FakeBlob) {
									if (data.encoding === "base64" && atob) {
											bb.push(atob(data.data));
									} else if (data.encoding === "URI") {
											bb.push(decodeURIComponent(data.data));
									} else if (data.encoding === "raw") {
											bb.push(data.data);
									}
							} else {
									if (typeof data !== "string") {
											data += ""; // convert unsupported types to strings
									}
									// decode UTF-16 to binary string
									bb.push(unescape(encodeURIComponent(data)));
							}
					};
					FBB_proto.getBlob = function(type) {
							if (!arguments.length) {
									type = null;
							}
							return new FakeBlob(this.data.join(""), type, "raw");
					};
					FBB_proto.toString = function() {
							return "[object BlobBuilder]";
					};
					FB_proto.slice = function(start, end, type) {
							var args = arguments.length;
							if (args < 3) {
									type = null;
							}
							return new FakeBlob(
									this.data.slice(start, args > 1 ? end : this.data.length)
									, type
									, this.encoding
							);
					};
					FB_proto.toString = function() {
							return "[object Blob]";
					};
					FB_proto.close = function() {
							this.size = this.data.length = 0;
					};
					return FakeBlobBuilder;
			}(view));

	view.Blob = function Blob(blobParts, options) {
			var type = options ? (options.type || "") : "";
			var builder = new BlobBuilder();
			if (blobParts) {
					for (var i = 0, len = blobParts.length; i < len; i++) {
							builder.append(blobParts[i]);
					}
			}
			return builder.getBlob(type);
	};
}(typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content || this));